Fabrication of Ag/AgCl/ZIF-8/TiO2 decorated cotton fabric as a highly efficient photocatalyst for degradation of organic dyes under visible light
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In this work, a photocatalyst Ag/AgCl/ZIF-8/TiO2 was facilely assembled on the surface of cotton fabrics via a simple method to fabricate a visible-light photocatalyst composite. The resultant cotton fabric was comprehensively characterized by scanning electron microscopy, X-ray photoelectron spectroscopy, X-ray diffraction, and UV–vis diffuse reflection spectroscopy. The results showed that the Ag/AgCl/ZIF-8/TiO2 aggregations have successfully assembled on the surface of cotton fabric. Subsequently, Ag/AgCl/ZIF-8/TiO2 coated cotton fabric was employed as a visible-light photocatalytic material for degradation of organic dyes using methylene blue (MB) as a model. Owing to the synergistic effect of the Ag/AgCl/ZIF-8/TiO2 composite, the functional cotton fabric presented highly efficient photocatalytic degradation performance towards MB, the degradation of MB by Ag/AgCl/ZIF-8/TiO2 coated cotton fabric can reach to 98.5% within 105 min under visible light irradiation. Moreover, the first-order kinetic constant of photocatalytic degradation was 0.0332 min−1. Additionally, Ag/AgCl/ZIF-8/TiO2 coated cotton fabric exhibited acceptable cycle stability. The photocatalytic degradation capacity of MB still can maintain approximately 85% after three cycles. Therefore, Ag/AgCl/ZIF-8/TiO2 coated cotton fabric can be viewed as a good material for dye wastewater treatment due to its good photocatalytic activity and acceptable cycle ability.
KeywordsAg/AgCl/ZIF-8/TiO2 composite Cotton fabric Photocatalytic degradation Methylene blue
This work was supported by “the Fundamental Research Funds for the Central Universities” (No: YJ201823). We would like to thank the Analytical & Testing Center of Sichuan University for SEM and XPS measurements.
- Kole AK, Tiwary CS, Kumbhakar P (2013) Ethylenediamine assisted synthesis of wurtzite zinc sulphide nanosheets and porous zinc oxide nanostructures: near white light photoluminescence emission and photocatalytic activity under visible light irradiation. CrystEngComm 15(27):5515–5525. https://doi.org/10.1039/c3ce40531a Google Scholar
- Kumbhakar P, Pramanik A, Biswas S et al (2018) In-situ synthesis of rGO-ZnO nanocomposite for demonstration of sunlight driven enhanced photocatalytic and self-cleaning of organic dyes and tea stains of cotton fabrics. J Hazard Mater 360:193–203. https://doi.org/10.1016/j.jhazmat.2018.07.103 Google Scholar
- Malato S, Maldonado MI, Fernandez-lbanez P, Oller I, Polo I, Sanchez-Moreno R (2015) Decontamination and disinfection of water by solar photocatalysis: the pilot plants of the plataforma solar de almeria. Mater Sci Semicond Process 42(1):15–23. https://doi.org/10.1016/j.mssp.2015.07.017 Google Scholar
- Metivier-Pignon H, Faur-Brasquet C, Le Cloirec P (2003) Adsorption of dyes onto activated carbon cloths: approach of adsorption mechanisms and coupling of ACC with ultrafiltration to treat coloured wastewaters. Sep Purif Technol 31(1):3–11. https://doi.org/10.1016/S1383-5866(02)00147-8 Google Scholar
- Sahito IA, Sun KC, Arbab AA, Qadir MB, Jeong SH (2015) Integrating high electrical conductivity and photocatalytic activity in cotton fabric by cationizing for enriched coating of negatively charged graphene oxide. Carbohyd Polym 130:299–306. https://doi.org/10.1016/j.carbpol.2015.05.010 Google Scholar
- Tauc JC (1974) Amorphous and liquid semiconductors. Springer, Boston, pp 25–27Google Scholar
- Zeng X, Huang LQ, Wang CN, Wang JS, Li JT, Luo XT (2016) Sonocrystallization of ZIF-8 on electrostatic spinning TiO2 nanofibers surface with enhanced photocatalysis property through synergistic effect. ACS Appl Mater Interfaces 8(31):20274–20282. https://doi.org/10.1021/acsami.6b05746 Google Scholar